Improvement in brushes



ErrEE S'rA'rEs WILLIAM E. LAWRENCE AND CHARLES' E. L. HOLMES, OF NEW YORK, N. Y.

IMPROVEMENT IN BRUSHES.

Specification forming part of Letters Patent No. 192,@3, dated July l, 1877 application filed June 21, 1877.

To all whom it may concern:-

Be it known that we,W1LLIAM E. LAW- EENGE .and C. E. L..HoL1vrEs, of the city, county, and State of New York, have invented certain Improvements in Brushes, of which the following is a specification l A- is the back of the brush, which may be of any suitable material, but consists, preferably, of a single sheet of metal thick enough to retain its shape, but thin enough to yield somewhat at the end under the pressure of the hand, which is passed beneath the handle a, as usual.V It will be apparent, however, that the brush may be provided with a side handle or grasping-handle at the back, or both, or any other suitable arrangement of handles maybe employed.

At the under side of the back A are crosspieces lb, for the reception of the ends of the twisted-wire shafts e of the brush-cylinder c, each of which is bent to the U-shaped form shown, and as indicated in dotted lines, Figure 3, one cylinder being arranged within the other, and all together forming the brush. ing-face B.

Where the brush is rounded at both ends, as in Figs. l to 3, the U-shaped cylinders are duplicated, as shown, and a straight cylinder, c', is supported by brackets b between the platesV b b, so as to form a continuous brushing-face." `Where the brush is round only at one end, the'plate or flange b is at the rear, Fig. 4.

The bent portions of the brushcylinders may be secured in any suitable manner-as, for instance, by staples i, driven into a wooden crosspiece, d, attached to the back, Fig. 4. 1t is desirable, however, to secure the cylinders detachably to the back, and for this purpose I provide the back with a slide, D, hav-l ing hooks m, which, when the slide is pushed inward, catch beneath the shafts e of the cylinders, as shown in Fig. 2, and hold them in place.

A button, n, on a pin projecting from the slide, may be employed to facilitate the adjustment of the latter; ora screw-pin may be used, so as to secure the slide after adjustment; or a spring-plate,o, with a lip, s, which catches in a notch, s', in the back, may be used. The cylinders c are so arranged, in relation to the backplate A, that the bristles will extend across the edge of said plate, and above the back, as shown in Fig. l.

By bending the cylinders to the U-shaped form as described, parallel to each other and one within the other, an extremely close and solid brushing-face is produced, the density of the face being increased at pleasure by bringing the shafts of the cylinders closer together, and interlocking the bristles. The bending of the cylinders also produces a brushing-face rounded at the ends, and free from the angular corners, which result from the use of parallel straight cylinders, while the projecting of the bristles across the edge and above the back always interposes a portion of the brush between the said edge and the object to which the brush is applied, preventing the abrasion or wounding of the latter.

The cross-cylinder C not only closes the gap between the bent cylinders, but it further covers and conceals the cross-pieces b b. 1

Owing to elasticity of the back, the latter will yield somewhat to the pressure of the hand, and permit the brush to be used with more comfort and less fatigue than where the back is perfectly rigid. Owing to the detachability of the bentk cylinders, any one of them,when worn at the under face, may be removed, reversed, and again applied, thus renewing the face of the brush, and, when necessary, the entire face may be renewed by substituting new cylinders for those which have been worn on both sides.

lnstead of bending the cylinders to an exact U shape, they may be bent to different approximate forms, as shown in the diagram, Fig. 5.

We claim- 1. The combination, in a brush, of aflexible metallic back, A, brushing-faceB, and handle a, for the purpose set forth.

2. The combination of the back A and a brushing-face, one portion of which extends across and above the edge of the back, for the purpose set forth.

3.` The combination, in a brush, ofthe back A and a series of bent Vbrush-cylinders, `ar- 7,- The qombiuatin 0f the beek Adienges b,y endg adjustable-locks D, for the` purpose set forth.

In testimony whereof We have signed our names to this specification in the presence of @W0 Subsslribng witnesses.

GHAS. E; L. HOLMES. WM. E. LAWRENCE. Vlitnesses;A F. D. BAKER, J. H. JOHNSON. 

